{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5461",
    "entityType": "User",
    "nonce": "0x8b60c6e116926c5d6830c5c0aca8116e5049ee5a3c0496f5c2585628f9037a71",
    "signature": "0x75b0c0446004c11a1cc3e7c06eb4a775982125fefcb842819e09f54a69f6dfb52bca5cb3fcc7faf6c25b18d9a960ed9ec7ba29d6c410ed23a9912a300bdfd4021b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}