{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "280208",
    "entityType": "User",
    "nonce": "0x9a307498dad3c4f5190a076ca015a6df8c77ac0057f387aff53f976efad4acec",
    "signature": "0x17113a9d11b3c9c7350fb69dd81db6192f51c6024189c9dde8cafaedc552c99c079c52b0e031839df0d3a75274def1b1bc229fb7306335f92e1ccdfa2d6e01001c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}