{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "213442003",
    "entityType": "User",
    "nonce": "0xbd04c0dedafa4e3213e38285e9f26e96595a56ff47bc47196f0e31d570e90f36",
    "signature": "0x769dc4e7f65dd7a282ee36b526e614e730a3b0577f5fb8d26ae7d41fcd523c8d099b1e70b3a7736162b6dd7612ca7629008b30653da41093685b63ca7f23d40d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}