{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xff77a82ff0fbc7c238a12f7ec72e1aee9ae709c7498b32c981bf67111751be35",
    "signature": "0x627a497685af95ba84f7e3c16b6d9ae8bee025de136ea5ffce651bf391467804181f70bb9e491c391f4813a04035fb153f660ba72033de24f05b16ca7656e89d1c",
    "signer": "0xFeA5bc7239fee611C512dE588FA68Aee47B94040",
    "userId": "323807960"
  }
}