{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0b78edcbcef652b062b80ffdcb3f6d4aab38d071dad5248900a433b3a79e8807",
    "signature": "0xf69ae6bdadd1ce50ecc44f8985696ccb0a302564b5f69409bb9161d68d0a0c117e070a50028f3b7c70e2ca5d60e96de7cb62886dcdd0825ca697fa8177b2fd9e1c",
    "signer": "0x0F14847C13192e78c728A5b359989b0870512CFE",
    "userId": "720807656"
  }
}