{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x5526893a53fbc80d499b1bd802dd3a38e53d668137211f93587bb71b16fd3849",
    "signature": "0x00d7294abdf51fdb42898706a6b08768cfd0cd4823ba5e0c6745661bc368a0c13d6be4444505cd2cfbf1512b0563aa139d794a33c939b6e3133e44be38b68a0a1b",
    "signer": "0x55D68dd969e4DA4f2F181236ED522Cc2c5eB6637",
    "userId": "279742168"
  }
}