{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10373",
    "entityType": "User",
    "nonce": "0x0e56a814ed2b877beb8160a47629ac4956112f4a066208fb0468eb5218189944",
    "signature": "0xe1d8f868d1437c34e1670bb2cf9208ff0f09734fcc5659515226ecf87867706923efcc1290dcb07dff4983fa8b5e56b516f5f0a30cdf025ce4746295e7a215741b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}