{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "297541",
    "entityType": "User",
    "nonce": "0x45e79c12b259c4088fcee1c87ac65f197b170d88a0d1c0ae7dad72e29b149dc7",
    "signature": "0x1553f0f8dc366c38a7d46e50362d03b9b5873f1d1312ce55025db7912372e1ec2205ea7afc3e8d75aeb82234846fa481fd0299a485c3617ced00b8d9d8bb11301b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}