{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf55a3872817ee4464defba163692635546f42e668cffb1f0f8a021d45ca72cf9",
    "signature": "0x03f2ce8a3e564d09bdadd4d53df3cf90dee950b51af23075a02a7a4b3aca30fb336ba5fdff39e951f5a67a430ede828ec51cb6c56822a664fac87e9081075f1a1b",
    "signer": "0x3cEe8ddC12dB405b52FC2a34764302D78C6E9d3D",
    "userId": "328828428"
  }
}