{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x567a99fa07ce082cb74cc8ae08828fecc5c182cac87aca5bebe8d37472ccd4e5",
    "signature": "0x6b58f818c31d3460c56288efec60205f1877ed886c0f0b764c2d2ca4b3e258f6533fbf82aefafabccea572b9c13a29a6bb965480fa5cba8516f8bc15655bcb9f1b",
    "signer": "0x7662cb86A5Ab2f46DF58d87368873d0f07FbC1Ca",
    "userId": "875856435"
  }
}