{
  "manageEntity": {
    "action": "Create",
    "entityId": "701933628",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Que buen ritmo!!\",\"entity_id\":73638788,\"track_timestamp_s\":67}}",
    "nonce": "0x891f2a3630bac3c3c17377c6c6ee79215f4e9e8ddbfc3699ebc325927d22f590",
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    "signer": "0x7Cd44Dc53B13eEA7335A000Ce36c05cDFE34b348",
    "userId": "355113"
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}