{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0xc19919a15a466ac99e3361e0b22c7aa4bf80e5ce46fa9199af22880edffd1978",
    "signature": "0xab769da427eaf0c612be6287538e097c5b95d0bcc714d2d4aaa7340d5968481c6f70c30ce25d8152552e6046d90c52b4d5aeafef9a2525e8803a971e674d557c1c",
    "signer": "0x03015d975f8B0d07425826BFAc15A4492F59a5B7",
    "userId": "658736296"
  }
}