{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1882640",
    "entityType": "User",
    "nonce": "0xccc0f3acaea827270e8fe2f63f2bf6ea3ad27342f36dc7fbdb8d1d27009440a0",
    "signature": "0xf98dd1c5ce92b0b1dafb7f99e3c99aa0474523bccb1d965120cd655c5a8c43532b8bd44605f868d3ceb952e14b9e90f4b10f3eb5196b01840f41c80927b1947e1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}