{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1886616",
    "entityType": "User",
    "nonce": "0xc65736e10be83915a0d0089cc9a22ab0676bf776a46f2879801a309cda5447e7",
    "signature": "0x3aa910dfac6f9525a76980f3ad5835647de0f9816e83639b67f867cb2db518d87b67efe50b064b34a52e05dad08d83a9df961a65ee1a4f02199fd6462c07a7cc1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}