{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xee0cc2a5d9b0cafa9bd941f7f50d2c57d0482a69c1bcfa4c3bd59d53d053e256",
    "signature": "0x6cdf7a82a0090a4e612065256cbc21e2bc68410288e2fe92a1a7feb18c30b52b0c96e37f7c1b34d29cb0f453753b8eaf46c4172e5c26c48b499876ede9488b071c",
    "signer": "0x4d3E6848a8a1272cbB333b35616e0C22CBD3366B",
    "userId": "353363139"
  }
}