{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200218",
    "entityType": "User",
    "nonce": "0xcebcf58803b944fe7a545f170a3766810f65280fc5a1e0c6a19de222b0eff359",
    "signature": "0x57c845386f8d05751f32b0b9116d8ce2716c338565362a449b5cc0fceb8fe88b66da6d0fb993f6de88e8862a11a35735d6af67da837d433093163379d5f15e7c1c",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}