{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "626189233",
    "entityType": "User",
    "nonce": "0x5c43e6675986b26b018a19e63e46dbdde0dbcabeb1844750d4de29a3195c6a3c",
    "signature": "0xb001faf9d0f27e87cf2b03bef75a4f1138c64f2a502f70cd2a0d7e3c64ad78256605e129c21e2e2eaa5ed74fd85b4524e8e605ff442696648cee747192b912c71b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}