{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "897648338",
    "entityType": "User",
    "nonce": "0x2ac37dbcb56fb19b1d4bc347c71ebd630c63ec43c22e0d0c8a45d7773fc6f624",
    "signature": "0x45677df8f60f599af92e938d04d586e7d78b38c45d86d45461ea15d7f19b19836b60503b17a279898ead709fb4a7d9a004575521bb78488a289448c55bfad9b31c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}