{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203978313",
    "entityType": "User",
    "nonce": "0x4d1a1794054a2f2dd6656087d80a542a61d24513cd49bd1b776860482a0764b0",
    "signature": "0x90ee2e48f492f8fbd6b74e741beaf7a4eb94c9622dbbbdddfe1a52e035439fda591eb30715e37a3f67c2cd14100c5e8588b5678c3d3d1f4c3b6215c96e5c943d1b",
    "signer": "0xcBFBf860488b647E167A7020ac01A0A0c34Bf981",
    "userId": "4601100"
  }
}