{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x60f08f2176bc51a73cb29220c5d2f5d4a00ec116f386e50cc39c4c5d7d3ed04c",
    "signature": "0x3c0545c0c8d7ac64ae8f10506b85832fe25629dd0c6737a5590721bae2317c886ae30c9e9405f489ea42b822491acf8b3600c22b0380bcd1e68b4f28da0dccb91c",
    "signer": "0x306F12d5f97327a8099a74CdE3603214150d7e5e",
    "userId": "197430922"
  }
}