{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x9b4679a064b24da17b1f1f1ef35c431e7a768eb1f1cb77023cc74c567e03fd3c",
    "signature": "0xc5db56b43bd63d8d4597380803b7f0042eedb4adb345a8f474347d132b0b48e55119779ee3167ef3c408ac3c16b283c6c078f8c68ef864eccac52325354c3de91b",
    "signer": "0x7FCffbc9FB7516A6453F59c5b9918Ea8A7EB33eb",
    "userId": "502388335"
  }
}