{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa52deacb58f0a519a8f31985489ef826de419744921d4012e778f56dc7b40f70",
    "signature": "0x5f873cd2cc443cca2c0b2b4e804febf6bfe7a66cb5d04bd54e4efb7d2e2cdb310c04d26892e9f1ec41aa31496368e8edc14047afc4044ec986dec896b71e1ea31c",
    "signer": "0xa8bEf8f6520D0a7B337E64a67301b3BbC3C8120b",
    "userId": "281983217"
  }
}