{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137037",
    "entityType": "User",
    "nonce": "0xd9d79625b6616710e9f0490f655d6904be3fbf3a269a3f9803965fc3f967e896",
    "signature": "0x73b39281e2376815981ecaae909045a8fa3aa29b06427ce5d5dc8a401f123218325242b8224c4f58f6a0eb015d47b00be17da38648ae631a67a255b7d5251e1d1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}