{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3c9abf5e1afc5619146c323a9039b0e1c830d0c1106ac227b86b599fac0d5b1f",
    "signature": "0x3e47c1018d8a9908fec8fa83b7df725d1193e6b9566db5df17a4180ec8b74bb86e1ef58f692f29bea3d65073605a603ae9a8c441cb2eba0a14e6c454f56ebab91c",
    "signer": "0xD4Cced62e9c26DcAC2b868ff2a633cbE47d7a55A",
    "userId": "310834319"
  }
}