{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "150754",
    "entityType": "User",
    "nonce": "0xd8cec08f472791180a3ac7dda23fd2969bacf01d93c45c2b626f443bc9955dcb",
    "signature": "0x8eb5dc28e659c0cd13b8925fda703d79662d097d8cca754deef1eeaeecca9376211ea2c3518cd8c86f2b73dc84c3cac9448315b77db05d478b13b0107548e9681c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}