{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x991f11876f6a54d01337c01b5224584f8d2469f41f11511076ce26d21f714e12",
    "signature": "0xb3ecb29e7299721f6c8990f90287f964c3f4127da9891ec0d440f54eacbcd53e0e6eaa060c1a9e748b5e31200f551ec9a2c1b83e8014a4c196e93681edcfd5e51c",
    "signer": "0xaDC9D4604F02A3d510468234256a0815f96F0D3C",
    "userId": "198890948"
  }
}