{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8d2fb09895c13ca29e2ace8f61a4c1b344f3d0c8da27d3beb37e722e7090dd21",
    "signature": "0x6e342d24480b900c7f71601ed522ba371ead99a40d55e2d1641306c4e20ad088779d0fdce4dbb3789a668941e362d060fdb61b99ddd0284689b1e9272a6385f81c",
    "signer": "0x0c04b3299da48663fFDe73ffa9E3e33c33E6E3e6",
    "userId": "321367530"
  }
}