{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398",
    "entityType": "User",
    "nonce": "0x17894e57909e0687fa2df668da289dd2bd770872c366615f5982e9d5625a2c16",
    "signature": "0x66a4d29b8afb4a16d507ea258b3026ee85bcab47f8d70513981957edca3774204e10c449681f011b758be05b0ec9d0dd1a69c2aff2ceb125b2336830a8798ffc1b",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}