{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881116",
    "entityType": "User",
    "nonce": "0xfc39bba7457e2fa1eed1fa3a2d6edf215ab1811b57796d2ab3c217c65bf3f2e7",
    "signature": "0x6cb6308194da3ff89ddbff27fd5b8a94626c04d7396802d003687135ae7c165434aeec79f5928f8ed80a58a9c24c5b79cff6d0352708f3859fd6d1f046f582d61c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}