{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121885",
    "entityType": "User",
    "nonce": "0xb0a084219b8929f507678c6e7aaa23bd73f3faaf69dede51071d67c2ca30202f",
    "signature": "0xb04e2e20ee5dd3ef344beb64db6c5417715e26ce6e4440c4d96cb58af1a071202781aabd61ab2a413a22285997f44ad544032df859894f98c9c30e5b68de55fb1b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}