{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "283478",
    "entityType": "User",
    "nonce": "0x1d7ccc14f21aafa4e4d981a6dc3d966c6d3883a7073e5b212eae7b25ab510846",
    "signature": "0x6b2964c11a16f82922416ceb21c9093d78868c0b9ee314a922b83ef6ad6e0b3f7ac04229d42c5d87be35730b6c749537a0bede6297717c1fe12eb00bf59635871c",
    "signer": "0x730D61884359389d8aA22afeF2b83FF4F7c9ee63",
    "userId": "342017819"
  }
}