{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x81fca6327bc970b2072212f7063170f5f2df8b360a841606bbec196f51b7e8a6",
    "signature": "0xd6eb9ca243caf2f6c5fc011851c7ce9b4127ffcb37cb10a2d2a76486d3a98ee10ab5257cfc779856eebc674d30ef00dc04e31be3f2070a75c8bb190748efbe691b",
    "signer": "0xF7F32441263345Cb41C1BfFa72F73f7302a51D80",
    "userId": "753807502"
  }
}