{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "923551697",
    "entityType": "User",
    "nonce": "0x2987156e2546e493364c7913b985b113ae86542248c1740a2664cbcb3bb92e3f",
    "signature": "0x90f4cf803b0beaf988253679b3aa20e48969992aaa54e7719e68c16cf1953b632cd27ecd45375c06b77d467c2919b87eac3b6578dde0e241199062e7f2b5194a1c",
    "signer": "0x0f60ca71dCBe6AB80DC2FDF0Efe863EcB0A49b6A",
    "userId": "486924218"
  }
}