{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x87c05101375a52a229576a447d49d091642f59a1012ccc1da8e8cdb35eb5465a",
    "signature": "0x0bb4b314c80f4d3ba8b77bb9ee81593c66b175ffd3d9870b88ce7a3d97f6e780453cb61f5be2102db6a8c4a2ab8cb8076085873a449e363170a4e9540616ecc31c",
    "signer": "0x9A7429eE2415DFdB8657982e6B0d577077A9e349",
    "userId": "157121134"
  }
}