{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "645526985",
    "entityType": "User",
    "nonce": "0xf80648bcffb954d04f5ea9d0fc8e512e273fbb8ab7212faeb5317a212526e5af",
    "signature": "0x96048a58f7200abcc38188c049f1f476ed6cdb0595cda769f0617dc0e256d8fd2614be5c9f25bb67daa0868863f423c8c70af4c7e86f2bcbeae12437f654ed531c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}