{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x83481b1f9be364020f726d39fce5363a77288091ad865ea039bda3bfc03188e2",
    "signature": "0x64d96e572c540231b4f3c560db4f7095bd50d64b86fcaf3e8501f0d22225fbb363d82bb4880ee3ca9b5a90b7eb14d21a1aff919fdb6305653a5702b5ed4016c11c",
    "signer": "0x7547B44B7404C0bBCf4bDdc35b8FAa60d5473289",
    "userId": "779235560"
  }
}