{
  "manageEntity": {
    "action": "Create",
    "entityId": "1636944916",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"So cool buddy!!\",\"entity_id\":559131265,\"track_timestamp_s\":7}}",
    "nonce": "0xf73233774b055184862c2f07dee5afcd49e39021151a5e3abf0f0fc037f3b801",
    "signature": "0x8671fec2893395e2f83f8c6bab04008064085d0d9e60b3c350a80d054597f944495dfe51bb0ad6a478f3a5d4ae21c92804247548194339d1a6dc6133f41932491c",
    "signer": "0x7Cd44Dc53B13eEA7335A000Ce36c05cDFE34b348",
    "userId": "355113"
  }
}