{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "613311683",
    "entityType": "User",
    "nonce": "0x6310ef5923cb66b214d9010d03a1131e3fbf93ee8539125b3de90867d4d19b79",
    "signature": "0xfc9434df9ec818dfe389248462a2ceab56f7a90e57a122774202ab23ee5278525ccb0250d21ec481593b5553579534f591fa6fba7f8ce4240e7d1b53006dbac91b",
    "signer": "0xeD4de8C7aEdcca7a62a5E17Fb9DF5ee4991E5b73",
    "userId": "209405413"
  }
}