{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1d700a3ad1607be4a5f21b2e8a7e45691486e6d6e2bf1e1acfc60f54bae5ae13",
    "signature": "0x325943908229debcc6e38674cca67ae33decefad995adc63e46475c0ea1d0e791f87372e68014555d214e24c9d2604d44f7fdde6ad751ae5039131584406f7591b",
    "signer": "0xA620A04E3D805fe03c662Eb474014F26744259F4",
    "userId": "974283899"
  }
}