{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "615702798",
    "entityType": "User",
    "nonce": "0x1859bdd9d87297be4487323060f17faf05c1949650f246d7124a0fef4b64dd0b",
    "signature": "0x3b6941284f33ab6a11df44faf74eefa9f604b758bb58d7b7c36f15edb92c6b3c369c44a29ba86636e72b63dd7540bbd6860ef13eb6f762cc7c20f88b57169c0d1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}