{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5c4ed2bfa329f5c9a89929307c70d6a445b835afff3d44ee254165c192a7f6c0",
    "signature": "0x5817821e40144868bd552ea9ee05811657a8fc17d29c4286e8744e8469b70d441b8d46f1bea70d2087621c44f5c34b326d13c5a5fa5fb19caa3f90e4c9adc3721b",
    "signer": "0xa30D28f9D78b78FE2B434731b220d297F3f44713",
    "userId": "565509746"
  }
}