{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124733",
    "entityType": "User",
    "nonce": "0xffaee25a72bc2cd808b3a3dd3ded8224cd3b41b0b4b29327ed77b4fd572e7e51",
    "signature": "0x926ca0d38e9b3b5d5725f048a61a440d7e62932eafbd0d4b48460f4abf5162684ae14951c3eaac300775ad0da531bcd3618fb5ba6030d25d1072d6844b4b33af1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}