{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x00dcdf20a7f64c690e10666dc90daccf058eae2dd529da2190e5579c2b10ff1a",
    "signature": "0xb2b2645c73578c6b6bd4ccd34e66dd0aa8ad88edb328aea797d63a2d4722b5f86431baa79e56050847daa2ed2c5d545bc2e3e647300e0a29ae3f8c5e21b7c3bd1c",
    "signer": "0x9db84b5af18534d8Ee180c90E1377f813B5Ec313",
    "userId": "741417198"
  }
}