{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x818d496eb62254b8e760b5e4a8c38b26e3e3d0695d1b2282ec01523aa15bb8cf",
    "signature": "0xb5094ef1f37a553f5783f935e9c911bed0aa6b32157feb8401fada63ccda4b904eb30d6b6ee242b76407acffd0e366514a1bfee5872aa09e479bc186ef9a9d9c1c",
    "signer": "0x64FFe0281b039044f7d34f49E097375a625c6850",
    "userId": "367335314"
  }
}