{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0xc1d91cc2bb7d12057a554edec505b7c1333fa34bc793a2c34450c09797a6b0cc",
    "signature": "0xc4f0b968e9983f2875b05292859f59c5d08a915c5db0c4ff48da68f0e7fbb2c605f1c96ca626d4c88144dda35d6d884e02b804d82cb8b3d56c1cf8182e1289811c",
    "signer": "0x1e9F846fdf1a89ba11e2D67fb4831B7E14ae8940",
    "userId": "617992566"
  }
}