{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "539482786",
    "entityType": "User",
    "nonce": "0xa4435caf903af9a20911ef8115c9b361e00a805305fedb203f041fb7eafba35c",
    "signature": "0xfaed51e762b4b9307b47e75a289921eab8e558a236dba68ed93cd84311702a0e17c9cd57a5c6f9a223e5046a265aad7fd18164a8b47222129fe2650b0ea0fa431c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}