{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0xe758c1482c2c3bbf2d2a041c38b2dab7eadd27ea14361fc84f344922f79a0406",
    "signature": "0x8c9ea90d0d6e6f93132c9ba9c85e95e640f0c54ed8e14e9624789e65b70cecd12fde0a40c4c9162cd9daf57b491138bdf900bf615a3a040f62f2a150249d244b1b",
    "signer": "0xE61b4fA720A4327Fc15B349039A5518aa4F9f10B",
    "userId": "789953892"
  }
}