{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "148736103",
    "entityType": "User",
    "nonce": "0xf799f07ba9b8c1ec9c33272f01b99522c8606a41a97c381b5ee46a2e5c00e57d",
    "signature": "0x43a3d8359938116d58dae41f4d34032969a36ad275a3179b95dec909cf02c8f019808ff461fa87e03caf98fb892561c44d7d9b1453243a925292333a50a0b3b41c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}