{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390966",
    "entityType": "User",
    "nonce": "0xc439c1f159c7c42691e47ca7632c110c7d0aaa8482ce5d545312856dfa73a928",
    "signature": "0x10dddfbef74670737c93d96626bf95a7859aa6700cbcef6639fc6ef5b52984d82ec2c5172f086af091506734ab47c8d48ada4b420a63b87fa89787e443066fe31b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}