{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6698fc2a8c905c0f51259f8779795ffd1b265db9acd24e7c7893f3368d91a7a5",
    "signature": "0xffbd4487bfc8a906e1b25436a00fb31e81b9554c6190588753054c965f4663a26425c6c2afaec995559bc017954e16e6c69e11dfd6c8073e114682bf7da8d7aa1b",
    "signer": "0x0f8C1E55ed97EA0E984aCB529B16f24489c6D4ee",
    "userId": "19049354"
  }
}