{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1619d86a2e9e1ab4b13d478bc82d4a6d0e074b07bc9429e433f846085108f05d",
    "signature": "0x869caa256430f0f451c927d51f10b9ba15f770fe67650b76c7fdc5562fb59c5410a70cba95d25df8f0c869b07b02b280c5fb56c562339274fdace25c28dfeac31c",
    "signer": "0x91487a66bA5EbEC76Ed9068CA647A683216Bab55",
    "userId": "246269693"
  }
}