{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "837777538",
    "entityType": "User",
    "nonce": "0x635526808fb46ada0b7d2fbcf653e9a9082061fa2a688a0505d8192ec3e75471",
    "signature": "0x427e1eba0caa22830734c1556d2c720aba2700fc7b55913ee8a5de9c1a750fb02bc7940e59b8af775db9fda21845295d8b7c4cfde8a2039b433837c4902e0b941c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}