{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "906184213",
    "entityType": "User",
    "nonce": "0xd5977e852adae136d440f43da905da8c8336d2224f9943e1c5a14d07375a0843",
    "signature": "0x25c1800bf498dd4e6c503866ecafc44d2403fb68fdbbfa0d3b6b2ff36a4b1e1a51a6aba504c3ffd89c7ae8be9eaa98b403cbf56319a982e781993b76f0888ca01c",
    "signer": "0x4ad870a0C318214b4796d1464BC8Dc57C6b84C12",
    "userId": "408505072"
  }
}