{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd4e8f86840510a5ce8c5765ee2a68097d26bba840cc5537d76104a54ef28877d",
    "signature": "0x5e4c4d5e6a4d896496f07c33032a602dfb2392b129f6ee4ead2102c6b95fcb125a502396ff3a4d573ff59358660258ba23684610ef344cda3039b3c7ffa1a5711c",
    "signer": "0x4f046eBEA1DfCcc5b405945f30bB06749d4978C3",
    "userId": "506555278"
  }
}