{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "253005",
    "entityType": "User",
    "nonce": "0xb49c42c0f2a1a68ea7f38be8e266484919ac4ebb478de26ed3c757ac43a27dcd",
    "signature": "0x201d9440defc0f66309a0436ad63bb39198a245314312a11e6da624dbc0bce3a70760d9848f6a7615d0e1bf000d90c62a376a46359b1e707e8c92ca13e4d15ef1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}