{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x54a01f432dc5c7f5296169296db7c6c5ffc8635593688b021320620d35620cfc",
    "signature": "0x3765f3b0134b1d98a954ae16109931685074ca309ca9dfaf696107be60998edd06a21ce69c8795622d4d9bce650cd223b01442933076769ab6e05ef8c48ddde81c",
    "signer": "0xAc4De539c09b783C54D1688b282a73ecEd414513",
    "userId": "613879875"
  }
}