{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf8ddf5c6f15b2e684e14d65490b73c1e74b6123de1e6843198dda3b94203d4db",
    "signature": "0x0e267a51ce72bfced1b9884006583d719bef4dead5f856dc05392104e0a343cb04df31fda07a1d87a1687d7c0478f821a6a397727ec9ed97eb6449e2739a91361c",
    "signer": "0x405Ace7504427469D27C9BFC16447E01B53629B0",
    "userId": "428106775"
  }
}