{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "747987028",
    "entityType": "User",
    "nonce": "0x75d0ac6ceec3fe9739b94809a92226c24753d0c6e9f5a959d277f1d4f3bed731",
    "signature": "0x5036d11a82e9ff3c7c50669f1c24016457724e7231529955fc3d9b99fff964b5409ed119f0a4ccfc27d29ba00965406fc1e7aca059b0cd3218fb096dbb5aa4ba1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}