{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xf6dd0a7412499ec881cacea04bc6872e3c3d7f02ecf3f8fe28e04b780e0d634b",
    "signature": "0xabfb788aea7a60cdce7e74fef1d8512fb094c1735fb807cc1a86a6329f01da6346e24eff71ea05e6450c2a160426ed9fa0887f5fd03de5c0ddc94eda3d5c15271b",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}