{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "377377",
    "entityType": "User",
    "nonce": "0x2a50c347be37ff6bac48777ea3b877f02a269d0ad73c717cfce82c6766717202",
    "signature": "0x9810c9c80a43a2cd1e11689cc90a2246784966edabaf60bd77c8508d27d886407dfc73ad4f05576e1618398399e7e4d0ef4508aadb6e2ff2654668ad2984b4b01c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}