{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77744",
    "entityType": "User",
    "nonce": "0xbb99a2984d1318dc1a2c0005497a484224fbeec7baafa2ebd0c68d50b9c16425",
    "signature": "0x15599806eb4de6f18d507e62d06c6cb2eb9d2b858ccfe031a61be9daa36263fc59d6d709f12a191d0887c6d898a336b7445d66b1deeed46cbc68518215dd9f331b",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}