{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xb5c64325a19e52dfdcfb2740534f6067e2270328dd583f1efb4ff8499dbcd574",
    "signature": "0x42b387e2d0c7834ad928025f7f5bb6c5679c2d0e6cb7755b6def1470e7ef623c3e081d4dcb264063f4da2e8394a500455e2a19fcaf1b00cee5769244244a36571b",
    "signer": "0x51F0B9CbfA02b6CA88Eb180845C7F8C1B74ACE39",
    "userId": "319049298"
  }
}