{
  "manageEntity": {
    "action": "Approve",
    "entityId": "1438074837",
    "entityType": "TrackCollaborator",
    "nonce": "0xb8d5a60095fe0dab1f81602d26d2e3e91da5a1c3f652efb6cbcbaad42c8608f6",
    "signature": "0x0746b0b77c9565f5048b0a530d2d10e6e1346278112bd0c9f899a876908edb312f9c3f46a0460736c30ccd28c9c473a28c81551b3be920bb6aeb7998d47cbde41c",
    "signer": "0xa440ff689BAd41Ca5D6C20eb26c47eDf00B69b3A",
    "userId": "47224049"
  }
}