{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1224",
    "entityType": "User",
    "nonce": "0xb13231f8bf4fbb5577bc532d137a90dab32e1c4629faa06a5949de75bb1e5220",
    "signature": "0x7ebc919f6eaafa3c265950386b1c0ef87354afaaab4131b4137852acc13481cf0ec9c2a2d6c2b55a9d90e24f40e844e0d77fce88ecdcf858eb357e9f511e548a1c",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}