{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "475900419",
    "entityType": "User",
    "nonce": "0x16ae8db4d818ebfcd0959eb590864d2b479822afd3a0d79e7c3ba46785c78fcb",
    "signature": "0x0b9d9223e9362e6f89f476677b59dec54bd98990a0c91c70da72932cbcc1a4907e4f2259659e4c1791fe92aad24ad2ab1d5a569312dad0fa379b2a61735148a31b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}