{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x75893f653df18d00da43d0964f3d32fc3affb0c9179b9960e00d5827a53600f5",
    "signature": "0x04837ae72e007bf53e723c14c4e080341ff9fee6d202cf19a256175d5ebd98bb44cf252df36d379b7094151d19877b657255187491e55436b8ff8ffc679d74411b",
    "signer": "0xE7e6B236Bb4AF1D1a2Cae2B841eFCf1798b399d1",
    "userId": "854203718"
  }
}