{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "399633079",
    "entityType": "User",
    "nonce": "0x31d2e2c5b05a9934469364c73694761f3f1fbd7098cf11980aeeb2cd5c4e8ce8",
    "signature": "0xd9cfe732c37185a657e4d44848b6ac5bffa48e3b658483fc779dfc9edc5e20a355c341531b50ea80ef9b9ea0efb162bbba7f349154aa885bbe5ca7563d1497451b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}