{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124115",
    "entityType": "User",
    "nonce": "0x66e81198221c8e1a05767f95c45c83d2a6d55615806d3db1deeb6f1bc5839568",
    "signature": "0x33f9c7c0cb11db856f4eefcb5a484899b4166a722d105da24a757f1633c57fb32c9ebcca5d4c33524a2e9259621f90b4376db017239b9ce5b21379b7d1d2be061c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}