{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137314",
    "entityType": "User",
    "nonce": "0x6d8a357645c659fc6761576c5000fb7f262720dd56aa787f4b21551c618e8c1a",
    "signature": "0x2a59874886a4964e5116e95d45e0ca7acd9e252b353986ccaf2b7f4126663f6f6ce78ecbfb94b7591a11ac72cf7847f328a88f89bdcfac42254bb52e3f0136a51b",
    "signer": "0x223c16f2b0091b6bAfB460A8C40f221aE1dE47FA",
    "userId": "544674745"
  }
}