{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354908",
    "entityType": "User",
    "nonce": "0xbb14f86d19b84d09bb3ca374629d69f7cd13b339286e0f21b8ca95cf18b776ab",
    "signature": "0x17ef54102d74a8ab329925b8d45af695763a596e903f0c8d7c257064996349f34b50e5283606c28b133caad82d69be06e3cfe3c731da94cf494b402cf46e4c221c",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}