{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x81a3a7c1055c54b3e8bfb3b31f90b396d781da1dfd798fa19b88925ad8645cf6",
    "signature": "0x5fbd92a5af0aa7ad3691f98a750396f956614e5f26c1c9d4423eb3d2c743241319ad4d0bb37e617592de56becf4106e536c103cc03800de34049e852532b8d221c",
    "signer": "0x53D0a8347BAc9209407dc232C2d2390d6F59266f",
    "userId": "224286509"
  }
}