{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3d8dc4912ef4e89272e04c7f4cc03a03181b298a905ba66ce17dc387e05992f6",
    "signature": "0xc41d66854ef03076b216fb733ae456f3d553653c62826ba7da212476051cf79c446efa8e5d7a53e3a19d4b2322a64306e3a1b538d7b1713175a93b9d2dd6f2741c",
    "signer": "0x511988e5E1621247B6E624F65369416f750F96aE",
    "userId": "302705029"
  }
}