{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "261999",
    "entityType": "User",
    "nonce": "0x2fdea6ffcbf69c36f903018f61032a4afd1eada17373f50bfd42443f86bca463",
    "signature": "0x74095160983575dfc99c21b913c59c55ba90b99e69a919c173e1116ae15af36d5010e37a8547a24be9942c2b9f89d9b3b9f4a984721e83bee63d51b056decd8e1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}