{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319458",
    "entityType": "User",
    "nonce": "0x71b9ed1d542504fa9ff3492bad1daadc2e27caf7bf3d3206efbfd979fe09fe38",
    "signature": "0x3c5535b9cbaf636bf1f9301773596e14127174f391fa1bf432b3d667ff3a170255149117e1b24b0482ac96673a8523b80552bc57ece931863a2bb4f67f7af6741b",
    "signer": "0x8bc77Dd711F53774fD7455E0B2778aa01fbA53d3",
    "userId": "645932037"
  }
}