{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53770",
    "entityType": "User",
    "nonce": "0x015e28a315b058a871e019466ef97fbc4b76c858a3ab4d6595ac0be5a377e8a8",
    "signature": "0xfb5e93d3376b00cf0ca3ab373212e156a43e5e30fb3fa2ad97cb57786f0196f83938e05e2476a82a08416b619088129d46cf802da94895f90ea3268c2c5e31231b",
    "signer": "0xC59f7055B078B1Ee57c271E19BE5Dd7033FD64f5",
    "userId": "950751701"
  }
}