{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335392",
    "entityType": "User",
    "nonce": "0x15f0493299eb8f9990a45e113440d981fa8951593656bb9994071816716933ca",
    "signature": "0x4719b8a39c6f4066afd14810542b1b2e0000748bc8951a8177215275419f2d2e6fd46365d96def619026073688426632ee91dedaa302b226bc8be7cb4cb49c4a1c",
    "signer": "0x9b1a9d02F213F5C768F11FC832194b5cB665E056",
    "userId": "418702748"
  }
}