{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121125",
    "entityType": "User",
    "nonce": "0xe34ce853a2b8c90cced881f109b58ab3eed7a3494f5c013277f3f23123011b09",
    "signature": "0xba120a9464732bb4d55c4eab1b89c539a0a78dc51148734e823eab7e3b6a75cd34256891ae86634f3139fde5889b88f6ecb8c344fb4d599b4b39104e64a0af5c1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}