{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeaca02e1796789670979fd3e81d55d568ab08a7daae2c0fbc9e5a363c720cd1d",
    "signature": "0x40eddc77116d7da700abd88d779c3b4280dcf6fb634f988cce089b21c2a33478513a2a3b1c8728ea4ff287219357d107b2b0a1388886259134ffc8fd4ca8924d1c",
    "signer": "0x837e31fea20A37Bc9D721378C7c279a5727a2510",
    "userId": "277121870"
  }
}