{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2016389",
    "entityType": "User",
    "nonce": "0x4adc91c8efb270681a617aabb9ad689adbc4f09a3b59597e0ff0f44d5671e736",
    "signature": "0x476ac04993e6a93f2eb0200971fe4650646013d371873909d591aad9c40797c37204cf103b31c1fcd65b70e7e1e9a8e2b41694ad4fd47c015f67e86702118a0e1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}