{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "839400815",
    "entityType": "User",
    "nonce": "0xf064c7443b5d72cc5d24a7b97cadd59f2074f6258cddf6a0d4342c6962b34f0b",
    "signature": "0x19e9f86aaf12938a981f9d3f09b7c3b66eee5f56b787124609db90572b18d0250175e5be0e5d938fb5707e51cbfa35d879aff6bae2fd4ebbf1896f863fba132b1c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}