{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0b29f71032a610e15d114e2b62c1659cd08a021a1b83bd68635a5c1d82137195",
    "signature": "0x67ff90d1c1e4d983153452abb3c9ab06bcd17265c3e8a40deb8786ab449fca097292a1ce4107d53a13b2dbe2202fdf97eb2f7c75c1d8c0ad764759eaf64618a51c",
    "signer": "0xc307dac1DE7Bfa3CfD2B4c8d8eE81D385e6fB6DE",
    "userId": "827480237"
  }
}