{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3a4a96a5b708d2b26759671f98c25940df590ece2807964955eae4d1cf5c6eae",
    "signature": "0x41b9df4af81a4c790b30905756fb569cdd7e5037d75def2ae68d18f7043ffed21c4681bd3a0e19063600f3966be3b2524390441004eb5f498f9e140d7c35eb091c",
    "signer": "0x9B872C29885f4a39B0706106A8f01F8154D0d8c8",
    "userId": "660577927"
  }
}