{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "37904",
    "entityType": "User",
    "nonce": "0x1443c7bfa0478a400c06cb88bdd39dfbe54e9305f5cb932fdc22c917675c1394",
    "signature": "0x29b798466a69ef7099858be48d6b31b94d2a64fffce9ce350f5bdcd160d1b09603dcf4cb5d5eea425606b05a995f2764f9fe0958acd6de89525aa424854f0a8a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}