{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "888232211",
    "entityType": "User",
    "nonce": "0x4f2a66250e89f40065778122baab33d7f45dafea76667d89ccca0bad8f99276f",
    "signature": "0x9f9a4b357b695ae9b169763a96c9806b5d368313e24b968bfefd60acce760a9b0fd5e58dabd5bcbcbfc4fc358bb2a8c04fd302eff52635b1f2bea3d1411b254c1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}