{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "234310",
    "entityType": "User",
    "nonce": "0x907a1395bfbfc56ddec267eb62e67bb1141787c34ff12bd6b323ca7e93382efd",
    "signature": "0xb45b06279d81b0af99451c351e3e5549de4af03e93e2a565ad1af09da67c56012ceb2ad7a5d11295071c8ba05b12dcb2ae9eae7efe8b94c0cb9ed1495b1095b31c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}