{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753584533",
    "entityType": "User",
    "nonce": "0xc3a56639a4d7d6c835496df0b0892357248b4d5045930a0749151006b619cb1e",
    "signature": "0x553482585919d8bb966414cb8ebece6f50c2e51e82ba4088c2f8f134f9ecb7b021f1b7912b589e69dea1a47d55b77dd3b086d2c039c5c1e610031e264dd128381b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}