{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143570",
    "entityType": "User",
    "nonce": "0x757cdfc037d124c0722a45e5541d275d3a26d810afdc7d4c68b7916e7956fa92",
    "signature": "0xfe57bb3b584dc288cbb2daebd6b60c359240f9ae8700fbcf14bc0498c972ec00596ea635074e72216ac6b696f808494cc70ba9ad45abf3f972367e625b5bbee31c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}