{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1937100",
    "entityType": "User",
    "nonce": "0x1b78e91b6d98bd261071fdb95de3c328bfe0a86a2b283693ef3c82dfa132d49a",
    "signature": "0x5e928dabe36471d27910c324ebf7d83555662b7bdafeae4054bf2cb33ab3b5e63b0c2bdc7bed828f3743c3ca83d5a292e6d10af408647d13da807a83614dd59f1c",
    "signer": "0x12EaF77464824447aA995e75Dd707B3e5246be9C",
    "userId": "409175645"
  }
}