{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "737289883",
    "entityType": "User",
    "nonce": "0x866a70f0ffb9b10d9c20462795af33a21c520236d2dc3bff19e15e60ccb85d3c",
    "signature": "0x49997ecd8aed5910052d3beba65d8417e44c87b4b3f35fcc8553fb81a611406e0fcf96864f94bc9fb50e67d134571b7838c84322200fd43133b2872596d371041c",
    "signer": "0x4B31e50D7434DEfaaa0b24c5e862af503bACA6b9",
    "userId": "519913628"
  }
}