{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x6a1b614013d28bee069224d81c2b87886eede5e934713e062265803abab5993c",
    "signature": "0xf334d438b7f22d6b58de87cbc9666d76b7f73e93a32d2e6c4d3a09c015f83ff7492c173611bd7317e24edcb5340eaffbb1021d2b3ab38a97c4c1af558766d2c11c",
    "signer": "0x85f9d440b61768a3EcC7D5bD2307a38caf322BED",
    "userId": "242102384"
  }
}