{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "374911",
    "entityType": "User",
    "nonce": "0x778999b2ff98ceb7f391537615c7fb841bb235b50f71c7e84f492fa1ea207d6f",
    "signature": "0xa2e72d9b87be998dbb0437a0328cbb1f1339c648758cf319ab0c58fd61aa030a4cd83bef529435e77a93aa9b9fa370063cfc4ff574bd880eadbe14c4469caaa31c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}