{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "883647137",
    "entityType": "User",
    "nonce": "0x21ac78fb6be77d26d31c3788060c00db66c802ac8fda164908c94c9bed0fc4e8",
    "signature": "0xba8b340430e2f543448d7159ea01fddfce9736df687fa32bc36290ce86e21dcc0914e24765f59c4a5fa1144813ba21ee7c42778d1fdc62148df3ea7afced7ae91c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}