{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8c51956866868cec796c02b744f9928e34a5cd053175fcd5bdcbdc62bba58729",
    "signature": "0x579c007ea116899ba0fada23ddb6329acdcf88a26ea4e1345b409623f66e18ec005d11f4b00be0645d641e950fd662802e5695b064deac6580155ede681a28371c",
    "signer": "0x432904b1df5b9965A9B685B27300f2b74A6656A5",
    "userId": "402731668"
  }
}