{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "703513220",
    "entityType": "User",
    "nonce": "0x56fa544a6638e12abe909dacb35a15d2e328cce2651e4bf3a3300addf57d1276",
    "signature": "0x501132b3d1733323d0eab974842ab502bba5fa046e641db6c0e93f460e6238167ebecd1fce7025827c27c5ce11ef510073cc52d72713b04815f84be325e217291c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}