{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1440255",
    "entityType": "User",
    "nonce": "0x76996356ee42dc7fc4e31045cf3faf0e1a16b2de283ec8599c40252ca0cd55f4",
    "signature": "0xd5aee7e3dff10ff8efeef8285da8fd075b6905a3ef6fb5a35855a9db12371db55196fd61726eedc2400176ac7db78443a83cca4b28a41e2f236edcb5dded5b5f1c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}