{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "261954",
    "entityType": "User",
    "nonce": "0xc8c39f0d60640b5c95b619bc0355dd43e1087166b0e72a5dfa4fefb7c4fa6ed6",
    "signature": "0x4bdafb6cf43fdeb4b979c043500801a104b24a4d82c7cd69cd4574f93aa4b49069b7a316d93953e166b641b0b7403aea59db1541ec6e63a23c8dfaa47627ecab1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}