{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6557",
    "entityType": "User",
    "nonce": "0x040b05b5a91583a4899df3227e1b3f634f01085b50101d2d83c5ce27adf0b19d",
    "signature": "0x22bcdd88990659e215b2fc4fd585e2f75d8529d2c5049e824d6a9ec9c472c9422159bde91cef8d12cbba1a45a28c69471c82d6c8af55a2d6538981b6e2f8bb3d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}