{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xe7f9882bcf8c78a86ee14b81ebc3c66acb55ed82bdc0d91aa249f6fdad71a775",
    "signature": "0x22a217678e01528544e821a48a5ec02e17269d3235dc1ed9c1687fec8e72eac7460b9fc62dec754e796eaa41af6cce75342b4b618ada9f44b1dce85b3259f1f01b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}