{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335904",
    "entityType": "User",
    "nonce": "0xfb6505d42fbc857b5bbcd6b1fb4891f844829d51fb420c9426867b890c0e6269",
    "signature": "0x695d1f1dca61f51a21d00f32cdfff5ef0aa10224653d745070c378e4953de84354cef6aaff160a9f4c5abd0b47e2b059908f99e99c0c04e15dc3aac24d21dc601c",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}