{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1439612",
    "entityType": "User",
    "nonce": "0x5a1d508e4da066f19185d4606a1550e3af3f19e645631c60782acd98298ea8d2",
    "signature": "0x7bc34a163e3a3630470dbbd8a08bb24153281968916736cc2ba368b22729099f4d8ae4f51cbba5b93576e38986190389943de344564d069c23f80c7dd950afc71b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}