{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "66408",
    "entityType": "User",
    "nonce": "0xbe8ea2d9eae63e9ef5d5c5a5392d6064cc6dae11264312bfc4f579eb11af3b8b",
    "signature": "0x04af27c7c29de0c43c70b376961f2d3befd885bc3abb590b4a16b2a1b9e4c661709cb848a509c1eab9d4005a6e05a128b6f4423f6c3df4a536855c1876b2818c1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}