{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8433194ca3d2be62aef9d61f41015783e7a1a3940b2fca5b065626eb02a9e680",
    "signature": "0x8cfdacb074ea7211a8b9b02c4bd992ee27b5440a5fe65ae084fc93dc3203cad22bdbae6932382fec1bd6489932ffdba5a67d637e66751a8d17ca0d510d0234581b",
    "signer": "0x10F9eFF84cB30B2B7ed51c28ee2e13498e18e14E",
    "userId": "841833512"
  }
}