{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5401",
    "entityType": "User",
    "nonce": "0x74046a07e694fc19c856268fd8a737a5661b5a3932bb4b88ec8c254fc6cfc9f1",
    "signature": "0x4d5cf8ce5a027b8cffd2e6ba2c0942767b24f0c19f8a0a3b0c9c790247863d4e6a9631b687f7898c68dc083a7f697a56fdb6a720a16ef22a2e6bf319855594911c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}