{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x1173f861e29319c97368036abd02100a17b315b747cc9710dd413bb6e8a21d8d",
    "signature": "0x9c398a3e4f0b0245a00abd0071eea1a175dabd6ff66b0572de7ab108da7192035c73d05ba92743ce11b0e6feb1f982c9b6572cee37ff142a39c96bd3ce045c8a1c",
    "signer": "0x7FCffbc9FB7516A6453F59c5b9918Ea8A7EB33eb",
    "userId": "502388335"
  }
}