{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "511280302",
    "entityType": "User",
    "nonce": "0xaf12bbaaba94731e99b111bd068bde87b5251d2bd9fc8e53dfbf793fd0d5e2c1",
    "signature": "0x9eee077404dba0ce7c093553ee42a1af87552920294785b06d2181cf6f13ffff04e6f943dbf9a326439b77d02901e2e3f072c6627ec2fb58280c922e0e302b8a1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}