{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "378116426",
    "entityType": "User",
    "nonce": "0x560578c0c3508ecd581f54720be17f3359a15f6f812ac47b2e544142316ac815",
    "signature": "0x16dbef5ec3caafeb4aec202eaf35bf7f01384ab40384d1bfd96696b96c4328dd1134cf83905de563d3da8785b3236f14403d6061a99ca0fe62fcc1e1d50a3ab81b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}