{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120545",
    "entityType": "User",
    "nonce": "0x8555c9623cdb401ec2e57b64c24f964966a49fe558c1400128c9e9049288481a",
    "signature": "0x494ad697e933d2255ea0e4c687862d61cf6fbfe386a2a2857caf0d823cd1377f39b8673128a91d00d74eee9860dcfd54d56986be6fe37787540df6947df452041c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}