{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "889252114",
    "entityType": "User",
    "nonce": "0x955577d25ac43de78c6451ec63df9a4716275808cbdc2b2a8fd341af0fa56c73",
    "signature": "0xec46db1d07a9e683bfca9a6f176d67c436abf366133acf3fee92cd5c4cf904ee69edfdea95cc3a00409aaf0716ad015188e1278dc989ed5ea8c3aeb68c03ad221c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}