{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7cf726c323b96c3d72df6c24b7e214eb592aaca48b4f85a4a72a60e56667e622",
    "signature": "0xc8b214fa561c1b94abac92d8584235373463f3689f3de0afde24557bf59df2f4441feef25c4593eb906af4abf738d622da7167b2ec0a1de6c30b56f0c89231e21b",
    "signer": "0x9608739cF672dBA9cA4A21C9e1747b1851fF09b1",
    "userId": "559807928"
  }
}