{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "136423",
    "entityType": "User",
    "nonce": "0x1de8ab87039d2ae8a6fcb046fd6f8e65398dd7c259176b1511328612da89b827",
    "signature": "0xde76d6cb04c1d20d585013c94ff3095419a691d078af2dae4ce8bf9de35ef51f63daf16ca899c2149d8dbe85766fa2c1a315715c821005a6996d9140311249e01b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}