{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4974",
    "entityType": "User",
    "nonce": "0x9da23db1144cfff8b54924646cd3b25a0ce63d9b5110665c2fd8119cc3a42e3d",
    "signature": "0x0d7aec96029acec00452459583e17245b6630ebd97e77f62bbdc4fa0029bf65341f726e21bf63c2f814f770b853590e65b70e38bcae6d89841c3be7f7f026e371b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}