{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "650221",
    "entityType": "User",
    "nonce": "0x6a82734dc81f9e9499e8f55c94e32373e5f5be6dad4640d7b1018835504be7cc",
    "signature": "0xcf428c3ccf34f51059063976e84b14ee6cfc9c8bf3dcf20c22788e3cc59217db4b65709b5ee8458742945dd5c740a696da4133ca15ac09ee02783e74a2d9d1931c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}