{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10449019",
    "entityType": "User",
    "nonce": "0x1fd19132db2f8227f916925ebd61668c345e8e6038e33114c456bb4677e31dbe",
    "signature": "0x47603ddab17f8b44f037477323d17e0bfd3c8fa8ab092bcd0423f81a13a040166741db1825f82ef1545e59fbac3370c515417f0c7726847f61d657b95f204d261b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}