{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "83210179",
    "entityType": "User",
    "nonce": "0x7559b66a813c98f9c56fc1cd56776288ffad8df11cd201c3a03a20b572f88baf",
    "signature": "0xf3666c2b191cf88abb6391739df61ed81882bd49f22409b569a4d226079dabe32d9c50150ed5b55826ffbd810d0886607db682d2b460cd0436f2aa8d700ff4a91b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}