{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "166754",
    "entityType": "User",
    "nonce": "0x6ca1fadfdd2309f9ce1592f68ea0ae2259f2bbbe1678698ee7bccd67098d3d43",
    "signature": "0xa57a494a078459487879d029d463439ebc969984e8cf0630b98c346921acdf247ce139e22ccd6633f5cf3805feedfd4bd02ac00c06d1eb88935f219e297ec8d61b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}