{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "731255",
    "entityType": "User",
    "nonce": "0xe34cf410ab90184bedfd5c804f5ad3bd654bf9d36f8d7138c89a27a5309b1fce",
    "signature": "0xd9985bf07f20fad9185594e0a4019e4b0215d1474423d6851f5680e9fb209fc2020fb53385167ea53bd7a442247b2b0561863b6af2af54e60cb3fdb5c6f9d6791c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}