{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x56c25bab92c0d4382fcf299a53197131f8abbe75ee3805fde0e46f3792e50a99",
    "signature": "0xe5ce8258de4d132f6592e68afd6a39a42d8d7860e02a8ef385e4b601e1157f066f8ed39b230933ca42a28741ca27af537bf5626277109bcb076e6e4eb84e68831b",
    "signer": "0x645AAbB3BF848412862B16580BBDb4CEeBBf2EE6",
    "userId": "47150955"
  }
}