{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "261999",
    "entityType": "User",
    "nonce": "0x87d4bd7d8c8fa3d1c6f51124412e2d276abc7ac4293fbef2cffccc38d1f7face",
    "signature": "0xc12f07c9ef4cb1bde6b68a9ac6f38fcae44da84eda5539aa3d485029258e786e13463cf560bf608d71a4e2cc18c94d6d7725bc3b1bade4201bcb3093545ca1711b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}