{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335904",
    "entityType": "User",
    "nonce": "0x8d3086aa10a3d68567dfa57fe4142beed3088e307da6bd527d0abe4077d5604d",
    "signature": "0x4e920492cd8a67cabb493da45be54946bee498357bd3f2bc876c9eb0d9d548fb4ef5105ad6d095354588df06a7aac1f3f86ea6acf3522b379fdd060d3342d54b1b",
    "signer": "0x6A29a28652c5866aB50f6690188bB7D36a01CB9d",
    "userId": "645940872"
  }
}