{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "153103",
    "entityType": "User",
    "nonce": "0x57ba2c07f94dab6051792fdf27d7d2088c5fb041950784f5e2f7d1ae339d8cfc",
    "signature": "0xccfa154243abd233786c3cd5b2f354ac8537a1ab18cf0de5844d50ed34f789662041a3873479a4c2d99b728262a17a9b20d7665a084bf3ab703474f10d3f85b01b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}